<template>
  <div class="box">
        <van-pull-refresh v-model="refreshing" @refresh="onRefresh">
        <van-list
            v-model="loading"
            :finished="finished"
            finished-text="没有更多了"
            @load="onLoad"
        >
            <van-cell v-for="item in list" :key="item" :title="item" >
                <ul>
                    <li>{{item}}</li>
                </ul>
            </van-cell>
        </van-list>
        </van-pull-refresh>
  </div>
</template>

<script>
import Vue from 'vue'
import { List, Toast, PullRefresh } from 'vant'

Vue.use(List)
Vue.use(Toast)
Vue.use(PullRefresh)

export default {
  data () {
    return {
      list: [],
      loading: false,
      finished: false,
      refreshing: false
    }
  },
  methods: {
    onLoad () {
      setTimeout(() => {
        if (this.refreshing) {
          this.list = []
          this.refreshing = false
        }
        for (let i = 0; i < 10; i++) {
          this.list.push(this.list.length + 1)
        }
        this.loading = false
        if (this.list.length >= 40) {
          this.finished = true
        }
      }, 1000)
    },
    onRefresh () {
      // 清空列表数据
      this.finished = false
      // 重新加载数据
      // 将 loading 设置为 true，表示处于加载状态
      this.loading = true
      this.onLoad()
    }
  }
}
</script>

<style>
    .box{
        overflow: auto
    }
    .van-pull-refresh__track{
        height:617px;
        overflow: auto
    }
</style>
